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Architecture |
Voltage FB |
Number of channels |
1 |
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) |
5 |
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) |
12 |
GBW (typ) (MHz) |
280 |
BW at Acl (MHz) |
800 |
Acl, min spec gain (V/V) |
1 |
Slew rate (typ) (V/µs) |
240 |
Vn at flatband (typ) (nV√Hz) |
2.5 |
Vn at 1 kHz (typ) (nV√Hz) |
2.5 |
Iq per channel (typ) (mA) |
5.6 |
Vos (offset voltage at 25°C) (max) (mV) |
0.75 |
Rail-to-rail |
No |
Rating |
Catalog |
Operating temperature range (°C) |
-40 to 85 |
CMRR (typ) (dB) |
85 |
Input bias current (max) (pA) |
16000000 |
Offset drift (typ) (µV/°C) |
4 |
Iout (typ) (mA) |
110 |
2nd harmonic (dBc) |
85 |
3rd harmonic (dBc) |
95 |
Frequency of harmonic distortion measurement (MHz) |
1 |
SOIC (D)-8-29.4 mm² 4.9 x 6
The OPA820 device provides a wideband, unity-gain stable, voltage-feedback amplifier with a very-low input-noise voltage and high-output current using a low 5.6-mA supply current. At unity-gain, the OPA820 device gives more than 800-MHz bandwidth with less than 1-dB peaking. The OPA820 device complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input-offset voltage of ±750 µV and an offset current of ±400 nA provide excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage-swing headroom allow the OPA820 device to operate on a single 5-V supply with more than 2-VPP output swing. While not a rail-to-rail (RR) output, this swing supports most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
Exceptionally low dG/dP (0.01% or 0.03°) supports low-cost composite-video line-driver applications. Existing designs can use the industry-standard pinout, 8-pin SOIC package while emerging high-density portable applications can use the 5-pin SOT-23. Offering the lowest thermal impedance of the industry in a SOT package, along with full specification over both the commercial and industrial temperature ranges, provides solid performance over a wide temperature range.